Machine of the household type for cutting, mashing, and whipping fruits, vegetables,and the like



AND

Nov. 24, 1953 I N. w. BERGLIND MACHINE OF THE HOUSEHOLD TYPE FOR CUTTING, MASHLNG,

WHIPFING FRUITS, VEGETABLES, AND THE LIKE Filed Jan. 15, 1951 INVENTOR ATTORNEYS Patented Nov. 24, 1953 MACHINE OF THE HOUSEHOLD TYPE FOR CUTTING, MASHING, AND WHIPPING FRUITS, VEGETABLES, AND THE LIKE Nils Wilhelm Berglind, Stureby, Sweden Application January 15, 1951, Serial No. 206,089

Claims priority, application Sweden January 16, 1950 The present invention refers to machines of the household type for cutting, mashing and whipping fruits, vegetables and the like and comprising a knife device arranged at a bottom of a receptacle on a rotating, preferably motor-driven shaft.

In previously known types of household machines of the kind set forth, the knife device generally consists of horizontal and/or obliquely that parts of the material to be disintegrated may remain at the center where they will ride on the nut. Furthermore, it is required that liquid be supplied to create a circulation so as to permit disintegration of the whole mass of the material subjected to treatment.

The object of the present invention is to avoid these drawbacks, and this object in view is attained by the fact that the knife device is constituted by knife blades the cutting edges of which are arranged to run through the center of rotation. In a knife device of this description, the material to be disintegrated is sucked down toward the cutting device and is seized here at once by the cutting edges running up to and into the center of rotation to disintegrate the material. No admixture of liquid is required,

a suckingand outwardly ejecting effect being 3 Claims. (01. 146-68) shaft.

A knife device according to the invention will be described hereinbelow with reference to the accompanying drawin wherein Fig. l is a perspective view of a knifedevi'ce according to a form of, embodiment of the invention, the same being mounted on a shaft rotating within a receptacle. Fig; 2 shows a vertical section through ,the knife device and its attaching means, and i .Fig. 3 shows the knife device viewed from above.

The knife device is mounted in an upwardly open, preferably upwardly sonically fiaring cup I from glass, plastic or some other suitable material. A liquid-tightfbearing contrivance is arrangedin the bottom, 2 of the-cup l, a portion the'bottom of the cup and being securedby a washer 4 and by means of screws to the lower side of the bottom of the cup. Rubber packings "5 and 6 provide for therequisite tightening effect between the bushing and the bottom of the cup. The bushing 3 has two self-lubricating frictional bearings l and 8 inserted therein, in a manner, such that a space is provided between the bearings within the bushing 3. Arranged in this space are felt rings 9 impregnated with lubricating oil to maintain the oil quantity in the self-lubricating bearings. A shaft I0 is rotatably fitted into the bearings l, 8 and carries in its lower portion a coupling disk ll intended to engage a corresponding coupling member of an electric motor, not shown in the drawing. The upper portion of the shaft I!) has the knife device secured thereto.

' The knife device is constituted by a couple of angularly bent knife blades I2, the cutting edges [3 of which run through the center of rotation of the knife device. Each knife blade consists of a metal strip angularly bent to the shape of a V, one shank of said V-strip being horizontal or bent somewhat downwardly, whereas the other shank extends in a direction obliquely upwards. The two knife blades are rigidly connected with a plate I4 near the point of connection of the shanks, said plate being provided with a threaded aperture intended to receive the correspondingly threaded end portion of the shaft In. The two knife blades may also be made integral from a single piece of sheet metal slitted inwardly toward the center of rotation, so that a piece of sufficient size remains 1 for the securing of the knife structure onto the The slitted portions are then bent in accordance with the figures ofthe drawing. 7

In the use of theknife device the cup I is placed on a, frame containing a driving motor imparting rapid rotary movement of about 10,000-15,000 revolutions per minute to the knife blades. Owing to the formation of the knife blades, the material to be disintegrated is hurledoutwardly toward the sides of thecup, following these upwardly and being then sucked blades.

paths l5 drawn in Fig. 1. Owing to' the fact that the edges of theknife blades run inwardly toward the center of rotation, no'parts of the material will remain here,' but will be subjected todisintegration. The mass is divided more and more, and the desired consistencyhaving 3 been reached the driving motor is brought to a stillstand.

The knife device hereinbefore described and i1- lustrated in the drawing only forms an example of embodiment, cf' -theinvention; permitting of being modified-in its construction and details, without the principle of the invention being departed from.

What I claim is:

1. In a machine of the heusehdld -type for cutwherein said knife device includesapaircf' blades each having a cutting edge, said bladeslbeingeattached at their lower ends to the upper end of said shaft and including portions extending inward and obliquely upward from said lower-ends towards and extendingtbeyond the axis of said shaftgthe?respectivetcuttingfidgesrof sai'd blades "being econtained: in :a common'zpla'ne a whichsalso wontains saidaxis,.and saidedgespassing through andicrossingeachcothereait'said axis-substantially zaboizeit'he; endzofrthe shaft.

4 2. A machine of the type as defined in claim 1 wherein saidblades terminate in free upper ends. 3. A machine of the type as defined in claim 1 wherein each of said blades includes a second por- -.tion extending outwardly -;from= the .{IOWGI end ;.thereof attsubstantiallmas right angle to the axis of said shaft.

NILS WILHELM BERGLIND.

imferenceslCited-in the file of this patent iUNITEDESTATES PATENTS Number Name Date 856,295 Prindle June 11, 1907 4,166,867 ,e-Takamine Jan. 4, 1916 2,226,372 Cravaritis Dec. 24, 1940 253155018 "Lawrence Mar. 30, 1943 $335,002 Eppenbach Nov. 23, 1943 ,24965'180 Nardis et al Feb. 7, 1950 2,576,802 Morris Nov. 27, 1951 :FOREIGNrPATENTS fNumber Country Date 5 1 935 Great Britain Aug; 25; 1939 

